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DBpedia 2014

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AM_broadcasting abstract "AM broadcasting is the process of radio broadcasting using amplitude modulation (AM). AM was the first method of impressing sound on a radio signal and is still widely used today. Commercial and public AM broadcasting is authorized in the medium wave band worldwide, and also in parts of the long wave and short wave bands. Radio broadcasting was made possible by the invention of the amplifying vacuum tube, the Audion (triode), by Lee De Forest in 1906, which led to the development of inexpensive vacuum tube AM radio receivers and transmitters during World War I. Commercial AM broadcasting developed from amateur broadcasts around 1920, and was the only commercially important form of radio broadcasting until FM broadcasting began after World War II. This period is known as the "Golden Age of Radio". Today, AM competes with FM, as well as with various digital radio broadcasting services distributed from terrestrial and satellite transmitters. In many countries the higher levels of interference experienced with AM transmission have caused AM broadcasters to specialize in news, sports and talk radio, leaving transmission of music mainly to FM and digital broadcasters.".
AM_broadcasting thumbnail 20111110-OC-AMW-0038_-_Flickr_-_USDAgov_(1).jpg?width=300.
AM_broadcasting wikiPageExternalLink am.
AM_broadcasting wikiPageExternalLink buildbcb.html.
AM_broadcasting wikiPageExternalLink 17197.
AM_broadcasting wikiPageID "113509".
AM_broadcasting wikiPageRevisionID "603836394".
AM_broadcasting hasPhotoCollection AM_broadcasting.
AM_broadcasting subject Category:Broadcast_engineering.
AM_broadcasting subject Category:Radio_communications.
AM_broadcasting comment "AM broadcasting is the process of radio broadcasting using amplitude modulation (AM). AM was the first method of impressing sound on a radio signal and is still widely used today. Commercial and public AM broadcasting is authorized in the medium wave band worldwide, and also in parts of the long wave and short wave bands.".
AM_broadcasting label "AM broadcasting".
AM_broadcasting label "Radio AM".
AM_broadcasting label "Rádio AM".
AM_broadcasting label "調幅廣播".
AM_broadcasting sameAs Εκπομπή_ΑΜ.
AM_broadcasting sameAs Radio_AM.
AM_broadcasting sameAs 중파방송.
AM_broadcasting sameAs Rádio_AM.
AM_broadcasting sameAs m.0sxwg.
AM_broadcasting sameAs Q1377707.
AM_broadcasting sameAs Q1377707.
AM_broadcasting wasDerivedFrom AM_broadcasting?oldid=603836394.
AM_broadcasting depiction 20111110-OC-AMW-0038_-_Flickr_-_USDAgov_(1).jpg.
AM_broadcasting isPrimaryTopicOf AM_broadcasting.